Glowsquid

Glowsquids are squid-like creatures that inhabit the icy underground oceans of Europa, a moon of Jupiter.

Features
The Glowsquids look pretty much like Terran (Earth) squids, with moderate exceptions. Glowsquids have ten eyes, and along with six tenacles they have four biolumiscent tendrils that glow blue, which gave the Glowsquids their name. Their skin is transparent, so you can see their biolumiscent organs. The squids feed on glowing algae that grow on Europa's geothermal vents, and the squids inturn are hunted by the much larger Aquabeasts.